TWC347

7 files changed, 138 insertions, 0 deletions

diff --git a/challenge-347/deadmarshal/blog.txt b/challenge-347/deadmarshal/blog.txt
new file mode 100644
index 0000000000..ce3268493e
--- /dev/null
+++ b/challenge-347/deadmarshal/blog.txt
@@ -0,0 +1 @@
+https://deadmarshal.blogspot.com/2025/11/twc347.html
diff --git a/challenge-347/deadmarshal/go/ch1.go b/challenge-347/deadmarshal/go/ch1.go
new file mode 100644
index 0000000000..4175a30332
--- /dev/null
+++ b/challenge-347/deadmarshal/go/ch1.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func formatDate(date string) string {
+	s := strings.Split(date, " ")
+	day, _ := strconv.Atoi(s[0][:len(s[0])-2])
+	months := "JanFebMarAprMayJunJulAugSepOctNovDec"
+	month := strings.Index(months, s[1])/3 + 1
+	year, _ := strconv.Atoi(s[2])
+	return fmt.Sprintf("%d-%02d-%02d", year, month, day)
+}
+
+func main() {
+	fmt.Println(formatDate("1st Jan 2025"))
+	fmt.Println(formatDate("22nd Feb 2025"))
+	fmt.Println(formatDate("15th Apr 2025"))
+	fmt.Println(formatDate("23rd Oct 2025"))
+	fmt.Println(formatDate("31st Dec 2025"))
+}
diff --git a/challenge-347/deadmarshal/go/ch2.go b/challenge-347/deadmarshal/go/ch2.go
new file mode 100644
index 0000000000..0515bf05e4
--- /dev/null
+++ b/challenge-347/deadmarshal/go/ch2.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+)
+
+func formatPhoneNumber(phone string) string {
+	phone = strings.ReplaceAll(phone, " ", "")
+	phone = strings.ReplaceAll(phone, "-", "")
+	n := len(phone)
+	res := []string{}
+	for i := 0; i < n/3; i++ {
+		res = append(res, phone[i*3:i*3+3])
+	}
+	if n%3 == 1 {
+		res[len(res)-1] = res[len(res)-1][:2]
+		res = append(res, phone[n-2:])
+	} else if n%3 == 2 {
+		res = append(res, phone[n-2:])
+	}
+	return strings.Join(res, "-")
+}
+
+func main() {
+	fmt.Println(formatPhoneNumber("1-23-45-6"))
+	fmt.Println(formatPhoneNumber("1234"))
+	fmt.Println(formatPhoneNumber("12 345-6789"))
+	fmt.Println(formatPhoneNumber("123 4567"))
+	fmt.Println(formatPhoneNumber("123 456-78"))
+}
diff --git a/challenge-347/deadmarshal/java/Ch1.java b/challenge-347/deadmarshal/java/Ch1.java
new file mode 100644
index 0000000000..a218d1b168
--- /dev/null
+++ b/challenge-347/deadmarshal/java/Ch1.java
@@ -0,0 +1,17 @@
+public class Ch1 {
+  public static void main(String[] args) {
+    System.out.println(format_date("1st Jan 2025"));
+    System.out.println(format_date("22nd Feb 2025"));
+    System.out.println(format_date("15th Apr 2025"));
+    System.out.println(format_date("23rd Oct 2025"));
+    System.out.println(format_date("31st Dec 2025"));
+  }
+
+  private static String format_date(String date) {
+    var s = date.split(" ");
+    String months = "JanFebMarAprMayJunJulAugSepOctNovDec";
+    int day = Integer.parseInt(s[0].substring(0, s[0].length() - 2));
+    int month = months.indexOf(s[1]) / 3 + 1;
+    return String.format("%s-%02d-%02d", s[2], month, day);
+  }
+}
diff --git a/challenge-347/deadmarshal/java/Ch2.java b/challenge-347/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..9f13dbfab0
--- /dev/null
+++ b/challenge-347/deadmarshal/java/Ch2.java
@@ -0,0 +1,28 @@
+import java.util.ArrayList;
+import java.util.List;
+
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(format_phone_number("1-23-45-6"));
+    System.out.println(format_phone_number("1234"));
+    System.out.println(format_phone_number("12 345-6789"));
+    System.out.println(format_phone_number("123 4567"));
+    System.out.println(format_phone_number("123 456-78"));
+  }
+
+  private static String format_phone_number(String phone) {
+    phone = phone.replace("-", "").replace(" ", "");
+    int n = phone.length();
+    List<String> res = new ArrayList<>();
+    for (int i = 0; i < n / 3; ++i) {
+      res.add(phone.substring(i * 3, i * 3 + 3));
+    }
+    if (n % 3 == 1) {
+      res.set(res.size() - 1, res.get(res.size() - 1).substring(0, 2));
+      res.add(phone.substring(n - 2));
+    } else if (n % 3 == 2) {
+      res.add(phone.substring(n - 2));
+    }
+    return String.join("-", res);
+  }
+}
diff --git a/challenge-347/deadmarshal/perl/ch-1.pl b/challenge-347/deadmarshal/perl/ch-1.pl
new file mode 100644
index 0000000000..7e457053c0
--- /dev/null
+++ b/challenge-347/deadmarshal/perl/ch-1.pl
@@ -0,0 +1,18 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+sub format_date{
+  my @s = split ' ',$_[0];
+  my $months = "JanFebMarAprMayJunJulAugSepOctNovDec";
+  my $day = substr $s[0],0,length($s[0]) - 2;
+  my $month = index($months,$s[1]) / 3 + 1;
+  sprintf "%s-%02d-%02d",$s[2],$month,$day
+}
+
+printf "%s\n",format_date("1st Jan 2025");
+printf "%s\n",format_date("22nd Feb 2025");
+printf "%s\n",format_date("15th Apr 2025");
+printf "%s\n",format_date("23rd Oct 2025");
+printf "%s\n",format_date("31st Dec 2025");
+
diff --git a/challenge-347/deadmarshal/perl/ch-2.pl b/challenge-347/deadmarshal/perl/ch-2.pl
new file mode 100644
index 0000000000..601658398f
--- /dev/null
+++ b/challenge-347/deadmarshal/perl/ch-2.pl
@@ -0,0 +1,19 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+sub format_phone_number{
+  my ($phone) = @_;
+  s/[- ]//g,
+  s/(...)/$1-/g,
+  s/-(.?)$/$1/,
+  s/(^|-)(\d{2})(\d{2})$/$1$2-$3/ for $phone;
+  $phone
+}
+
+printf "%s\n",format_phone_number('1-23-45-6');
+printf "%s\n",format_phone_number('1234');
+printf "%s\n",format_phone_number('12 345-6789');
+printf "%s\n",format_phone_number('123 4567');
+printf "%s\n",format_phone_number('123 456-78')
+